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Cross-Linked Chitosan/Chitin crystal nanocomposites with improved permeation selectivity and pH stability
Washington State University.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
2009 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 10, no 6, p. 1627-1632Article in journal (Refereed) Published
Abstract [en]

This study is aimed at developing and characterizing cross-linked bionanocomposites for membrane applications using chitosan as the matrix, chitin nanocrystals as the functional phase, and gluteraldehyde as the cross-linker. The nanocomposites' chemistry and morphology were examined by estimation of gel content, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and atomic force microscopy (AFM), whereby the occurrence of cross-linking and nanoscale dispersion of chitin in the matrix was confirmed. Besides, cross-linking and chitin whiskers content were both found to impact the water uptake mechanism. Cross-linking provided dimensional stability in acidic medium and significantly decreased the equilibrium water uptake. Incorporation of chitin nanocrystals provided increased permeation selectivity to chitosan in neutral and acidic medium.

Place, publisher, year, edition, pages
2009. Vol. 10, no 6, p. 1627-1632
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-7483DOI: 10.1021/bm9002199ISI: 000266860700039PubMedID: 19388678Scopus ID: 2-s2.0-67049159863Local ID: 5e14ccc0-0962-11de-9f31-000ea68e967bOAI: oai:DiVA.org:ltu-7483DiVA, id: diva2:980373
Note

Validerad; 2009; 20090305 (krioks)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Mathew, Aji P.Oksman, Kristiina

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